Universal joint.



P. K. STERN.

UNIVERSALJOINT.

APQLICATION FILED MAY 5,1913.

1,143,659. Patented June 22, 1915.

l l'lTEE TATES PATENT OFFICE.

P313313? K. STERN, OF NEW YORK, N. Y., ASSIGNOR TO FRANK M. RANDALL MANUFAC- TUBING CORPORATION, A CORPORATION OF NEW YORK.

UNIVERSAL JOINT.

pet

Specification of Letters Patent.

Application filed May 5, 1913. Serial No. 765,584.

To all whom it may concern Be itknown that I, PHILIP K. STERN, a T izen of the United States, residing in the county, and State of New York, have invented certain new and useful Improve ments in Universal Joints, of which the following is a specification.

My invention in universal joints relates to that type of shaft couplings, provided with a double axial member, whereby, a pair of intersecting journal bearings, disposed in quadrature, and lying in a common plane, constitute the universal axial element, and wherein an element pivotally connected with each of the journal bearings provides one of the terminals of said universal joints.

it has more particular reference to the common atrial member of pivotally coupled universal joints, and in this connection, I have directed my attention to the construction of an axial member, comprising two interlocked and crossed bearing pins of substantially cylindrical formation throughout and engaged with each other by being intcrmcdiately rabbeted and intersected'to lit right angles to each other.

The object of my invention is to provide s ole, durable and inexpensive construction. combined with a minimum number of parts, and economy in maintenance.

characteristic of my invenattain the object thereof, ed in the drawings hereto ataud are described in detail in the rip-tion, and the distinctionnorelty are pointed out in the in the d sw ng Figure 1 is a side eleva- 1 tion of a universal joint, constructed in acce with my invention. fig. 2 is a n view of the axial portion of the the terminal members being shown on the line 2-2 of Fig. 1. Fig. elevation of a terminal member, with a section ol' one of the bearings thereof removed, together with a side elevation i my as as it is being placed in position improved interlocking coua perspective detail of one of the interlocking coupling pin members, and Fig. is a fragmentary sectional detail intermediately through the axial member, illustrating the method of securing the interlocking axial members against lateral displacement.

In the several figures, similar characters of reference are employed to designate like parts.

l designatesa universal joint, comprising, in the instance illustrated, a pair of terminal coupling members 2, which each consist of a shank 3 and laterally spaced forks 4 that terminate in cars 5, bored axially to provide bearings 6, the shanks 8 being bored at right angles thereto, in an axis at right angles to that of the bearings 6, and in a manner, to intersect the said axis intermediately, said ears 5 being disposed with relation tothe terminal members 2 as shaft coupling connections. The bearings 6 of the fork ears 5 of each of the respective forks & swing upon axes at right angles to veach other and upon my improved interlocking coupling pin axial member 7. This is composed of a pair of identically formed cylindrical journals 8 let into each other intermediately and at right angles-to each other by rabbeting them from one side, in order to form a recess 9, whereby' parallel lateral walls 10, and a floor 11 are'formed, and by slabbing the remaining sides at right angles to said floor, to form a neck 12, and

further, by mitering the shoulders adjacent the neck 1'2 to torm bearing seats 13. After the cylindrical journals 8 have been thus fitted together, they will form SUbStflIlLdllY, a cross, as illustrated in Fig. 2, and. provide horizontal and vertical axes, upon which the forks 4t of each of the coupling members swing on the bearings 6 of the ears 5.

It is important that the bearing seats 13, at the necks 12 ot the mutually engaging journals 8 shall fit each other snugly, 1n order thatback-lash or play of any klnd shall be obviated when the universal joint is in action.

The fork ears 5 of the respective forks 4 have opposing beveled ends 14 and are respectively spaced apart from each other, to

provide limited amount of end play, to

' permit of variations in axial alinement be- 1 viously positioned through the opposite shank, and after being set up tight to .aline for the cotter pin hole, the latter may be introduced and secured in saidhole.

7T0 assemble .my improved universal joint, one of the'cylindrical'journals 8 is passed through the bearings 6 of a pair of fork ears 5, until the recess 9 lies in a position opposite to the shank 3 and. intermediate of the ears 5.- This operation is repeated and a similar assembly is made of another cyjlindrical journal 8 and fork ears 5, where- ;upon the two coupling members 2 thus asjsembled, with their respectivejournals 8 are I placed in a position opposing each other and j at right angles respectively, and the recesses 9 of each of the said journals are brought into engagement with the necks 12, after which, the opposing coupling members 2 are l v I l forced in a direction toward each other until the axial member 7 shall have become a imit, whereupon the through bolt 15 is introduced to the perforations 16, and secured by the nut 17 v and cotter pin 18.

In 'practice, I prefer to form the cylindrical journals 8 of standard bar stock, such for example as cold drawn or rolled steel and execute the recessing and slabbing by a milling operation, as Well as the formation of mitered shoulder bearing seats 13. Thus it will be understood that a simple and inexpensive axial coupling member is provided for universal joints, which not only possesses a degree of initial strength, but moreover provides facilities for the renewal of worn bearing journals with the greatest facility and economy.

I claim: 1. The combination with terminal members of a universal joint comprising a pair of members substantially cylindrical throughout "tlfeir'flength and each intermediately recessed to form a lateral neck with parallel slabbed sides, the opposed walls of the recess in each member being at right angles to its base, forming shoulders, to receive the neck portion of the other member in crossed relation, with the neck surfaces of said members juxtaposed, the shoulders of one member engaging the slabbed sides of the other member, thereby forming a snugly interfitting bi-axial joint, and means unitmember engaging the slabbed sides other member, thereby forming a snugly out their length and each intermediately recessed to form a lateral neck with parallel I slabbed sides, the opposed walls of. the recess in each member being at right angles to its base, forming shoulders, to receive the neck portion of the other member in crossed relation, with members juxtaposed, the shoulders of one interfitting-bi-axial joint, and a uniting bolt intersecting the axes of said cylindrical members through their neck portions.

3; A universal joint comprising a pair of.

cylindrical members each intermediately recessed to form a lateral neck with parallel the neck surfaces of said of the g slabbed sides, the opposed walls of each recess being at right angles to its base, forming shoulders, and'the edges of said shoulders, perpendicular to said neck, being mitered, whereby said cylindrical members may fit together in intersecting relation, I

with their" neck surfaces juxtaposed, the

shoulders of one member engaging the slabbed sides of the other member, and the mitered edges of said members being in opposed contact, thereby comprising a snugly fitting bi-axial joint, and means uniting said members to prevent relative lateral displacement thereof.

4:. A universal joint comprising a pair of cylindrical members each intermediately recessed to form a lateral neck with parallel' slabbed sides, the opposed walls of each recess being at right angles to its base,-form'-.

ing shoulders, and the edges of said shoulders, perpendicular to said neck, being mitered, whereby said cylindrical members may fit together in intersecting relation with their neck surfaces juxtaposed, the shoulders of. one member engaging the slabbed sides of the other member, andthe mitered edges of said members being in opposed contact, thereby comprising a snugly fitting biaxial joint, together with a unitingbolt I j intersecting the axes of said cylindrical members through their neck portions.

5. A universal joint comprising a pair of cylindrical members each intermediately recessed to form a lateralineck with parallel slabbed sides, the opposed walls of each recess being at right angles to its base, forming shoulders, and the edges of said shoulders, perpendicular to said neck, whereby said cylindrical members may fit together in intersecting relation with their neck surfaces juxtaposed, the'shoulders of one member engaging the slabbed sides of the other member, and the mitered'edges of said being mitered, a

A in mp ao af i cantactg thereby In testimony whereof, I have signed my qgzrzsmga snugiy fitting biaxial joint,-t0- name to this specification in the presence of 10 3 with a unitinbolt intersecting the two subscribing witnesses.

of said cylinclricai members threugh a PHI I K. E -1 e11" 1160K portlons, am? a pan of termmal L P ST RN nedbers havmg bearmg portlons respec Wmnesses:

I engaging oppasite ends of each cylin- E. L. STERN, V r5392 member. TUBES, 

